Fibroblast Growth Factor-9 (FGF-9) is a steroid-regulated mitogen and survival factor for nerve and mesenchymal cells. FGF-9 is an autocrine/paracrine growth factor considered to be important for the growth and survival of motorneurons and prostate tissue. Recombinant FGF-9 is a non-glycosylated Protein, containing 205 amino acids, with a molecular weight of 23.3 kDa.